US20230150783A9 - Sheet feeding apparatus, image reading apparatus and image forming apparatus - Google Patents

Sheet feeding apparatus, image reading apparatus and image forming apparatus Download PDF

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Publication number
US20230150783A9
US20230150783A9 US17/063,878 US202017063878A US2023150783A9 US 20230150783 A9 US20230150783 A9 US 20230150783A9 US 202017063878 A US202017063878 A US 202017063878A US 2023150783 A9 US2023150783 A9 US 2023150783A9
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US
United States
Prior art keywords
sheet
roller
separation
guide
holder
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US17/063,878
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English (en)
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US20210155427A1 (en
Inventor
Akihiro Ito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Canon Inc
Original Assignee
Canon Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Canon Inc filed Critical Canon Inc
Assigned to CANON KABUSHIKI KAISHA reassignment CANON KABUSHIKI KAISHA ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: ITO, AKIHIRO
Publication of US20210155427A1 publication Critical patent/US20210155427A1/en
Publication of US20230150783A9 publication Critical patent/US20230150783A9/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/66—Article guides or smoothers, e.g. movable in operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B65H3/52—Friction retainers acting on under or rear side of article being separated
    • B65H3/5207—Non-driven retainers, e.g. movable retainers being moved by the motion of the article
    • B65H3/5215—Non-driven retainers, e.g. movable retainers being moved by the motion of the article the retainers positioned under articles separated from the top of the pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators
    • B65H3/0676—Rollers or like rotary separators with two or more separator rollers in the feeding direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators
    • B65H3/0684—Rollers or like rotary separators on moving support, e.g. pivoting, for bringing the roller or like rotary separator into contact with the pile
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/66—Article guides or smoothers, e.g. movable in operation
    • B65H3/68—Article guides or smoothers, e.g. movable in operation immovable in operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/06—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers
    • B65H5/062—Feeding articles separated from piles; Feeding articles to machines by rollers or balls, e.g. between rollers between rollers or balls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/70—Clutches; Couplings
    • B65H2403/73—Couplings
    • B65H2403/732—Torque limiters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2405/00—Parts for holding the handled material
    • B65H2405/30—Other features of supports for sheets
    • B65H2405/33—Compartmented support
    • B65H2405/332—Superposed compartments
    • B65H2405/3321—Feed tray superposed to discharge tray
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/30—Facilitating or easing
    • B65H2601/32—Facilitating or easing entities relating to handling machine
    • B65H2601/324—Removability or inter-changeability of machine parts, e.g. for maintenance
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/39—Scanning

Definitions

  • the present invention relates to a sheet feeding apparatus suitable for an image forming apparatus such as an electrophotographic copying machine that forms an image on a sheet using an electrophotographic process or a laser beam printer, or an image reading apparatus such as a scanner.
  • an image forming apparatus such as an electrophotographic copying machine that forms an image on a sheet using an electrophotographic process or a laser beam printer, or an image reading apparatus such as a scanner.
  • the image reading apparatus that reads an image on a sheet while conveying the sheet has a sheet feeding apparatus that feeds the sheet toward an image reading portion.
  • the configuration of the sheet feeding apparatus is known that includes a feeding roller that feeds sheets, a conveying roller that conveys the sheets fed by the feeding roller, a separation roller that forms a separation nip portion by pressing the conveying roller, and that separates one by one at the separation nip portion the sheets conveyed by the conveying roller.
  • Japanese Patent Application Laid-Open No. 2017-052573 discloses the configuration in which a sheet-like guide is provided upstream of the separation nip portion in the sheet feeding direction to guide the sheets.
  • a representative configuration of a sheet feeding apparatus according to the present invention comprises:
  • a feeding roller configured to feed sheets
  • a conveying roller configured to convey the sheets fed by the feeding roller
  • a separation roller configured to form a nip portion by being pressed on the conveying roller, and to separate one by one the sheets at the nip portion, the sheets being conveyed by the conveying roller;
  • a guide configured to guide the sheets fed by the feeding roller to the nip portion
  • a holder configured to hold the separation roller and the guide, and to be detachably attachable to the sheet feeding apparatus
  • This configuration improves the positional precision of the separation roller and the guide, improves sheet feeding performance, and facilitates the replaceability of the separation roller.
  • FIG. 1 is a schematic cross-sectional view of an image forming apparatus.
  • FIGS. 2 A and 2 B are a perspective view of a separation roller unit.
  • FIG. 3 is a cross-sectional view of the separation roller unit.
  • FIG. 4 is a schematic cross-sectional view of the image reading unit.
  • FIG. 5 is a perspective view showing the case where the separation roller unit is mounted on a sheet feeding apparatus.
  • FIG. 6 is a perspective view showing the case where the separation roller unit is removed from the sheet feeding apparatus.
  • FIG. 7 is a view showing another configuration of the sheet-like guide.
  • FIG. 1 is a schematic cross-sectional view of the image forming apparatus A.
  • the image forming apparatus A is provided with the image forming portion 211 that forms an image on the sheet S.
  • the image forming portion 211 includes the process cartridges 7 ( 7 Y, 7 M, 7 C, and 7 K), the laser scanner unit 3 , the primary transfer rollers 5 ( 5 Y, 5 M, 5 C, and 5 K), the intermediate transfer belt 216 , the secondary transfer roller 217 , the secondary transfer counter roller 214 , the drive roller 215 and so on.
  • the process cartridges 7 are configured to be detachably attachable to the image forming apparatus A.
  • the process cartridges 7 for respective colors include the photosensitive drums 1 ( 1 Y, 1 M, 1 C, and 1 K), the charging rollers 2 ( 2 Y, 2 M, 2 C, and 2 K), and the developing rollers 4 ( 4 Y, 4 M, 4 C, and 4 K), respectively.
  • the image reading apparatus 100 that reads an image of a document is provided at the upper portion of the image forming apparatus A.
  • the image reading apparatus 100 includes the reader 80 and the ADF 90 (Automatic Document Feeder).
  • the reader 80 reads the image of a document placed on the document table glass 82 .
  • the ADF 90 automatically conveys a document placed on the document tray 91 to read the image.
  • the detailed configuration of the image reading apparatus 100 will be described later.
  • an image forming job signal is first input to the control portion (not shown).
  • the sheet S stored in the sheet cassette 20 is conveyed to the registration roller 240 by the pickup roller 21 , the feeding roller 22 , and the conveying roller 105 .
  • the sheet S is sent at a predetermined timing by the registration roller 240 to the secondary transfer portion formed by the secondary transfer roller 217 and the secondary transfer counter roller 214 .
  • the surface of the photosensitive drum 1 Y is first charged by the charging roller 2 Y. Thereafter, the laser scanner unit 3 irradiates the surface of the photosensitive drum 1 Y with laser light according to the image data of the document read by the image reading apparatus 100 , and forms an electrostatic latent image on the surface of the photosensitive drum 1 Y. Then, yellow toner is attached to the electrostatic latent image formed on the surface of the photosensitive drum 1 Y by the developing roller 4 Y, and a yellow toner image is formed on the surface of the photosensitive drum 1 Y. The toner image formed on the surface of the photosensitive drum 1 Y is primarily transferred to the intermediate transfer belt 216 by applying a bias to the primary transfer roller 5 Y.
  • magenta, cyan, and black toner images are also formed on the photosensitive drums 1 M, 1 C, and 1 K, respectively. Then, by applying a bias to the primary transfer rollers 5 M, 5 C, and 5 K, these toner images are transferred superposedly on the yellow toner image on the intermediate transfer belt 216 . As a result, a full-color image is formed on the surface of the intermediate transfer belt 216 .
  • the full-color toner image is sent to the secondary transfer portion by the intermediate transfer belt 216 that is rotated by the driving force transmitted from the driving roller 215 . Then, a bias is applied to the secondary transfer roller 217 at the secondary transfer portion, so that the full-color toner image on the intermediate transfer belt 216 is transferred to the sheet S.
  • the sheet S to which the toner image has been transferred is conveyed to the fixing device 220 where the sheet S is subjected to a fixing process of heating and pressing. As a result, the toner image on the sheet S is fixed on the sheet S. Thereafter, the sheet S to which the image is fixed is discharged to the discharge tray 250 by the discharge roller 225 .
  • the reader 80 includes the image reading unit 81 (image reading portion) that optically reads the image data of the sheet S that is a document and converts the image data into an electric signal, the document table glass 82 , and the platen glass 83 .
  • the image reading unit 81 is moved by a driving unit (not shown) in the direction of the arrow T in the space below the document table glass 82 and the platen glass 83 .
  • the image reading unit 81 reads the image data of the sheet S by irradiating the sheet S with light while moving in the direction of the arrow T, receiving the reflected light, and converting it to an electric signal.
  • the ADF 90 is rotatably supported on the reader 80 . After rotating the ADF 90 upward to open it, a user can get access to the document table glass 82 .
  • the ADF 90 includes the document tray 91 on which the sheets S, which are documents, are stacked, the feeding roller 92 for feeding sheets S stacked on the document tray 91 (stacking portion), and the conveying roller 93 for conveying the sheets S fed by the feeding roller 92 .
  • the ADF 90 also includes the sheet conveying rollers 95 ( 95 a to 95 f ) that convey the sheets S conveyed by the conveying roller 93 .
  • the feeding roller 92 is configured to be able to be lifted and lowered by a moving mechanism (not shown). When the feeding roller 92 should feed the sheets S, the pickup roller 92 is lowered and comes into contact with one of the sheets S stacked on the document tray 91 .
  • the ADF 90 includes the separation roller 94 a that presses the conveying roller 93 to form the separation nip portion N where the separation roller 94 a separates one by one the sheets S conveyed to the conveying roller 93 .
  • the torque limiter 61 is attached to the separation shaft 94 b that rotatably supports the separation roller 94 a (refer to FIG. 2 ).
  • the document tray 91 , the conveying roller 93 , and the separation roller 94 a constitute the sheet feeding apparatus 300 that feeds the sheet S toward the image reading unit 81 , together with the holder 62 , the sheet-like guide 63 , the supporting member 67 , and so on, which will be described later.
  • the ADF 90 further includes the image reading unit 96 (image reading portion) that optically reads the image of the sheet S that is a document and converts the image data into an electric signal.
  • the platen glass 97 is provided at a position facing the image reading unit 96 .
  • the platen rollers 98 and 99 are provided at positions facing the platen glasses 83 and 97 , respectively.
  • the opening/closing cover 71 forms a conveying path for the sheet S when the opening/closing cover 71 is located at the closed position, and the conveying path is opened and the separation roller 94 a is exposed when the opening/closing cover 71 is located at the open position.
  • the closed position of the opening/closing cover 71 is a pressing position where the separation nip N is formed by the conveying roller 93 and the separation roller 94 a .
  • the open position of the opening/closing cover 71 is a separating position where the pressing of the separation nip N formed by the conveying roller 93 and the separation roller 94 a is released.
  • the sheets S stacked on the document tray 91 are first conveyed to the first reading position by the feeding roller 92 , the conveying roller 93 , and the sheet conveying rollers 95 a to 95 d while being separated one by one by the separation roller 94 a .
  • the first reading position is located between the platen glass 83 and the platen roller 98 .
  • the image of the first surface of the sheet S is read by the image reading unit 81 at the first reading position.
  • the sheet S is conveyed by the sheet conveying rollers 95 e to a second reading position located between the platen glass 97 and the platen roller 99 .
  • the image reading unit 96 reads the image on the second surface of the sheet S at the second reading position. Thereafter, the sheet S is conveyed by the sheet conveying rollers 95 f and discharged onto the discharge tray 73 by the discharge rollers 72 .
  • FIGS. 2 A and 2 B are a perspective view of the separation roller unit viewed at different angles.
  • FIG. 3 is a cross-sectional view of the separation roller unit cut by the K-K cross-section shown in FIG. 2 B .
  • the separation roller unit includes the separation roller 94 a , the separation shaft 94 b , the torque limiter 61 , the holder 62 , and the sheet-like guide 63 .
  • the separation roller 94 a is pressed against the conveying roller 93 to form the separation nip portion N, and is in contact with the sheet S to separate the sheet S.
  • the separation roller 94 a and the torque limiter 61 are rotatably supported by the separation shaft 94 b.
  • the torque limiter 61 is arranged at a position adjacent to the separation roller 94 a in the direction of the rotation axis of the separation roller 94 a .
  • the outer diameter of the torque limiter 61 is smaller than that of the separation roller 94 a , so that the torque limiter 61 does not interfere with the sheet S passing by the separation roller 94 a.
  • the holder 62 for holding the separation shaft 94 b is provided, and the holder 62 has the grip portion 62 c for an operator who replaces the separation roller unit to grip.
  • the holder 62 holds the separation roller 94 a via the separation shaft 94 b .
  • An uneven portion is formed on the grip portion 62 c for an operator to easily grip the grip portion 62 c with fingers.
  • the separation shaft 94 b is attached to the holder 62 by press fitting when both ends of the separation shaft 94 b are inserted into the holder 62 . That is, the holder 62 holds both ends of the separation roller 94 a on the separation shaft 94 b in the direction of the rotation axis of the separation roller 94 a .
  • One end of the separation shaft 94 b has a D-shaped cut portion (not shown) and fits with one end of the holder 62 .
  • the portion of the holder 62 on the other end of the separation shaft 94 b is formed in a C-shape and the other end of the separation shaft 94 b is attached to the holder 62 by press fitting.
  • the separation shaft 94 b By releasing the press fitting of the separation shaft 94 b by pulling out from the holder 62 , the holder 62 and the separation shaft 94 b can be separated. By doing so, the separation roller 94 a can be replaced.
  • the method of attaching the separation shaft 94 b to the holder 62 is not limited to press fitting, and the separation shaft 94 b may be fixed to the holder 62 using screws, for example.
  • the one end of the holder 62 has the D-shaped cut rotation restricting portion 62 a that restricts rotation of the separation shaft 94 b following the rotation of the separation roller 94 a .
  • the other end of the holder 62 is provided with the grip portion 62 c .
  • the holder 62 has the guiding surface 62 d for guiding the movement of the sheet S by being in contact with the lower surface of the sheet S, and the positioning boss 62 b (the positioning portion) to be positioned with respect to the support member 67 (described later) to which the separation roller 94 a is attached.
  • the sheet-like guide 63 which is a polyester sheet (PET sheet) with a thickness of 100 ⁇ m, is attached to the holder 62 .
  • the sheet-like guide 63 is applied to the holder 62 with double-sided adhesive tape. The function of the sheet-like guide 63 will be described later.
  • FIG. 4 is a schematic cross-sectional view of the sheet feeding apparatus having the separation roller unit.
  • FIG. 5 is a perspective view showing a state in which the separation roller unit is mounted on the support member 67 .
  • FIG. 6 is a perspective view of a state in which the separation roller unit is being removed from the support member 67 .
  • the opening/closing cover 71 is located at the open position in FIGS. 5 and 6 , the feeding roller 92 and the conveying roller 93 are not shown in these figures.
  • the separation roller unit is mounted on the support member 67 .
  • the mounting recess 67 f is formed on the support member 67 .
  • the separation roller 94 a is mounted on the support member 67 by fitting the separation shaft 94 b of the separation roller unit into the mounting recess 67 f .
  • the rotation restricting hole 67 d is formed on the support member 67 .
  • the rotation restricting portion 62 a of the holder 62 of the separation roller unit is fitted into the rotation restricting hole 67 .
  • the separation roller 94 a is mounted on the support member 67 with the separation roller 94 a being held by the holder 62 via the separation shaft 94 b.
  • a recess (not shown) is formed on the lower surface of the separation shaft 94 b .
  • the separation roller 94 a is positioned with respect to the support member 67 by fitting the protruding portion 67 c formed on the support member 67 into the recess (not shown). Further, the support member 67 is rotatably supported by the rotating portion 67 a with respect to the frame body 90 a of the ADF 90 . Further, the support member 67 is urged by the spring 68 (an urging member). The separation roller 94 a mounted on the support member 67 is pressed against the conveying roller 93 by the urging force of the spring 68 .
  • the positioning hole 67 e is formed on the support member 67 .
  • the positioning boss 62 b of the holder 62 is fitted with the positioning hole 67 e of the support member 67 .
  • the support member 67 has the guide portion 67 b that comes into contact with the lower surface of the sheet S fed by the feeding roller 92 and guides the sheet S to the separation nip portion N.
  • the support member 67 works as a mounting portion which the separation roller unit is attached to and detached from, and a guide member for guiding the sheet S to the separation nip portion N.
  • the guide portion 67 b of the support member 67 is exposed on the side of the conveying path of the sheet S and comes into contact with the sheet S. That is, the guide portion 67 b includes a portion arranged on the upstream side of the separation roller 94 a and the holder 62 in the feeding direction of the sheet S.
  • the inclined surface 67 b 1 is formed on the guide portion 67 b of the support member 67 .
  • This inclined surface 67 b 1 is inclined such that the more a position on the inclined surface 67 b 1 becomes downstream in the feeding direction of the sheet S, the larger the height of the inclined surface 67 b 1 at the position is.
  • the sheets S that are double-fed by the feeding roller 92 are separated by the resistance of the inclined surface 67 b 1 .
  • the sheet-like guide 63 applied to the holder 62 is located at a position where the sheet-like guide 63 covers a portion of the gap G between the holder 62 and the separation nip portion N in the feeding direction of the sheet S.
  • the sheet-like guide 63 is in contact with the lower surface of the sheet S to be conveyed to the separation nip portion N at the position between the holder 62 and the separation nip portion N, and guides the sheet S to the separation nip portion N.
  • the accuracy of guiding the sheet S to the separation nip portion N is improved since the sheet S can be guided close to the separation nip portion N.
  • the leading end of the thin sheet S with a small amount of basis weight abuts against a portion of the separation roller 94 a or the conveying roller 93 other than the separation nip portion N and the sheet S is folded.
  • the leading end of the thick sheet S with a large amount of basis weight abuts against one of the rollers to leave a scratch on it.
  • the sheet S enters the gap G between the separation holder 67 and the separation nip portion N, and the sheet S is folded.
  • the holder 62 has a configuration in which the separation shaft 94 b is held by both sides.
  • the separation shaft 94 b can be stably held as compared with the configuration in which the separation shaft 94 b is held by a single side. Therefore, the position accuracy between the holder 62 and the separation roller 94 a as well as the position accuracy between the sheet-like guide 63 and the separation nip portion N can be improved.
  • the sheet-like guide 63 is disposed such that the sheet-like guide 63 is not in contact with the outer surface of the separation roller 94 a .
  • the precision of guiding the sheet S to the separation nip portion N might be improved.
  • the sheet-like guide 63 might work as resistance for the rotation of the separation roller 94 a and that scratches are made due to the contact of the sheet-like guide 63 with the separation roller 94 a . Taking these concerns into consideration, the above described configuration is adopted in this embodiment.
  • the guide surface 62 d of the holder 62 extends in the feeding direction of the sheet S toward the torque limiter 61 to narrow the gap between the torque limiter 61 and the support member 67 in the feeding direction of the sheet S.
  • This configuration suppresses that the sheet S is folded by entering the gap.
  • the present invention is not limited to this configuration and may adopt the configuration in which the guide surface 62 d of the holder 62 is further extended such that the guide surface 62 d covers the entire area of the torque limiter 61 .
  • the configuration may be adopted in which the sheet-like guide 63 is further widened such that the width of the sheet-like guide 63 in the direction of the rotation axis of the separation roller 94 a corresponds to the width of the combination of the separation roller 94 a and torque limiter 61 .
  • the sheet-like guide 63 covers at least a portion of the gap between the holder 62 and the torque limiter 61 in the feeding direction of the sheet S, the same effect as described above may be obtained.
  • the present embodiment exemplifies the sheet feeding apparatus 300 that feeds the sheet S toward the image reading units 81 and 96 provided in the ADF 90 .
  • the present invention is not limited to this configuration. Namely, the configuration of the present embodiment may be applied to a sheet feeding apparatus that feeds a sheet toward the image forming portion 211 provided in the image forming apparatus A.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
  • Electrophotography Configuration And Component (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Facsimiles In General (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
US17/063,878 2019-11-22 2020-10-06 Sheet feeding apparatus, image reading apparatus and image forming apparatus Abandoned US20230150783A9 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2019-111144 2019-11-22
JP2019211144A JP2021080089A (ja) 2019-11-22 2019-11-22 シート給送装置、画像読取装置、画像形成装置
JP2019-211144 2019-11-22

Publications (2)

Publication Number Publication Date
US20210155427A1 US20210155427A1 (en) 2021-05-27
US20230150783A9 true US20230150783A9 (en) 2023-05-18

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Application Number Title Priority Date Filing Date
US17/063,878 Abandoned US20230150783A9 (en) 2019-11-22 2020-10-06 Sheet feeding apparatus, image reading apparatus and image forming apparatus

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JP (1) JP2021080089A (https=)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009078887A (ja) * 2007-09-26 2009-04-16 Oki Data Corp 給紙装置及び画像形成装置
JP5171969B2 (ja) * 2011-01-13 2013-03-27 東京エレクトロン株式会社 基板処理装置
JP5750939B2 (ja) * 2011-03-01 2015-07-22 株式会社リコー シート積載装置、シート折り装置及び画像形成システム
JP6056566B2 (ja) * 2013-03-11 2017-01-11 セイコーエプソン株式会社 媒体分離ローラー装着機構、ローラーホルダーユニット、媒体搬送装置、およびプリンター
JP6331659B2 (ja) * 2014-05-01 2018-05-30 富士ゼロックス株式会社 給紙装置及びこれを備えた画像形成装置、画像読取装置
US9856099B2 (en) * 2015-05-15 2018-01-02 Ricoh Company, Ltd. Sheet feeder and image forming apparatus incorporating the sheet feeder
JP6254725B2 (ja) * 2017-02-08 2017-12-27 キヤノンファインテックニスカ株式会社 シート搬送装置と画像読取装置と画像形成装置
TWI679124B (zh) * 2018-12-11 2019-12-11 虹光精密工業股份有限公司 事務機之饋送機構

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US20210155427A1 (en) 2021-05-27

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